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2001 Toyota 4Runner Exhaust Headers & Manifolds

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Doug Thorley Headers Reviews

Doug Thorley Header Review

Reviewed By Tim D (Redmond, OR) Reviewed for a 2001 Toyota 4Runner —6/1/2009 7:23 AM

Adding the Doug Thorley headers to my 2001 4Runner made is sound a lot better, however the power gains are not terribly noticable. I can feel the gains in the high RPM ranges (over 4k), however from a stop or at low RPMs the headers appear to have reduced back pressure too much and the truck seems to choke a little off the line. Overall for the price I would recommend them if you have money to spend and are willing to add more than just the headers to make the truck faster.

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